Lithium batteries in parallel can increase the total capacity, and the series can increase the total voltage.

　　Lithium batteries in series:

　　It means that the lithium battery is connected end to end. That is, the positive electrode of the first battery is connected to the negative electrode of the second battery, the positive electrode of the second battery is connected to the negative electrode of the third battery, and so on.

　　The voltage after series connection is equal to the sum of the voltage of each battery, and the capacity is equal to the capacity of a single battery. The damage of a cell in the lithium battery pack will cause the voltage of the whole battery pack to drop or become unusable.

　　Lithium batteries in parallel:

　　It refers to the connection between the first and the end of the lithium battery. That is, the positive poles of all batteries are connected together, and the negative poles of all batteries are connected together.

　　The voltage after parallel connection is equal to the voltage of a single battery, and the capacity is equal to the sum of the capacities of all parallel batteries. The damage of a cell in the lithium battery pack will cause the capacity of the entire battery pack to decrease or become unusable.

　　For example, a 12V10AH lithium iron phosphate battery connects two 50AH batteries in parallel, and then connects 4 groups of parallel batteries in series.

　　In order to ensure the safety and superiority of the lithium battery system, please carefully understand the principle of lithium battery and read this article.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect replacement for lead-acid batteries, and they are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data center and other industries.